1/2 3/4

23

2 3

2

2

2 3

25 27 29

23

1/2 3/4

25 29

23

23 25

25 27 29

29

23 25

25

2 3 4

2

2

29

23 25

23

2 3 4

25 27 29

23

23

2

2 3 4

42 44 48

42

23

23

2 3

2 3 4

23